/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.vm.memmgr.def;
import org.jnode.vm.VmMagic;
import org.jnode.annotation.MagicPermission;
import org.jnode.vm.classmgr.ObjectFlags;
import org.jnode.vm.classmgr.VmClassType;
import org.jnode.vm.classmgr.VmMethod;
import org.jnode.vm.facade.ObjectVisitor;
import org.jnode.vm.memmgr.HeapHelper;
@MagicPermission
final class FinalizerVisitor extends ObjectVisitor implements ObjectFlags {
/**
* My heap helper
*/
private final HeapHelper helper;
/**
* The heap that is currently being visited
*/
private VmAbstractHeap currentHeap;
/**
* Initialize this instance.
*
* @param helper
*/
public FinalizerVisitor(HeapHelper helper) {
this.helper = helper;
}
/**
* @see org.jnode.vm.facade.ObjectVisitor#visit(java.lang.Object)
*/
public boolean visit(Object object) {
final int color = VmMagic.getObjectColor(object);
if (color == GC_YELLOW) {
final VmClassType type = VmMagic.getObjectType(object);
final VmMethod fm = type.getFinalizeMethod();
if (fm != null) {
try {
helper.invokeFinalizer(fm, object);
} catch (Throwable ex) {
// Ignore error in finalize
}
}
helper.setFinalized(object);
helper.atomicChangeObjectColor(object, color, GC_WHITE);
}
return true;
}
/**
* @return Returns the currentHeap.
*/
public final VmAbstractHeap getCurrentHeap() {
return this.currentHeap;
}
/**
* @param currentHeap The currentHeap to set.
*/
public final void setCurrentHeap(VmAbstractHeap currentHeap) {
this.currentHeap = currentHeap;
}
}